# Relationship history for MSHA mine 5400396

Current hierarchy: **Gonzalo  Rivera (Colon) → Gonzalo Rivera → GRAERO PEDRITO**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Gonzalo  Rivera (Colon) → GRAERO PEDRITO; 1980-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gonzalo Rivera → GRAERO PEDRITO; 1997-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gonzalo  Rivera (Colon) → Gonzalo Rivera; 1997-06-01 to current/open; source msha-controller-operator-history